Our Team

William Bennett

William Bennett is our founder and CEO. In his capacity as CEO, William is responsible for strategic and managerial oversight.  William is also the co-founder and CEO of Energesco Solutions.  William has over 20 years of energy, construction, finance and regulatory experience.  Prior to founding Energesco Mechanical, William was a senior associate at the international law firm Hogan Lovells US LLP, where he practiced corporate and securities law in the firm’s Washington, D.C. office.  He has served as outside legal counsel to two internationally recognized conservation focused non-profit organizations in the Washington, D.C. area.   He currently serves on the board of directors of the ICCF Conservation Council of Nations.  William received his BA from Rhodes College, his JD/MBA from the University of South Carolina and his LL.M from Georgetown University Law Center.

Will McAteer

Will McAteer serves as our Chief Operating Officer.  In his capacity as COO, Will oversees all aspects of operations and planning for our Construction and Service Divisions as well as our Estimating Department to achieve our corporate goals, strategic market expansion and implementation of business development efforts.  From Pre-Construction through Project Completion, Will’s passion for excellence drives him towards continuous improvement practices.  Will has over 39 years of mechanical contracting experience, having spent the past 24 years in executive management roles at various leading mechanical contracting companies in the Washington Metropolitan market.  As a veteran in the Mechanical Construction and Service space, Will has extensive experience in Plan/Spec, Design/Build, and Integrated Project Delivery as well as Performance Contracting methods.  Prior to joining Energesco Mechanical, Will was an executive at PBM Mechanical and Limbach Company, and he also served as the founder and CEO at Dominion Mechanical, Inc.

Jamie Lang

Jamie Lang is a founder and serves as our Chief Financial Officer. In his capacity as CFO, Jamie is responsible for financial, accounting and IT oversight. He also serves as CFO of Energesco Solutions, a partner company that focuses on energy efficiency and renewable energy solutions for commercial facilities. Jamie has a track record of success in the small business management arena, including driving the growth and profitability of a division of a company through over 400% growth in three years. He has managed several businesses as a finance/operations manager, several of which he co-founded and guided through start-up phases. Prior to Energesco Mechanical and Energesco Solutions Jamie served as the CFO of U.S. Restaurant Properties, a private real estate company focused on the purchase of triple net restaurant parcels. He graduated magna cum laude from Colorado State University with dual BS degrees in Zoology and Biological Sciences, as well as an MS in Operations and Technology Management from the University of Wisconsin-Madison School of Business.

John Gallagher

John Gallagher serves as Vice President of our Service and Controls Division.  John has over 16 years of mechanical and HVAC experience.  Prior to his role at Energesco Mechanical, John performed mechanical contracting and consulting throughout the Mid-Atlantic and Gulf Coast regions. John has been a part of new construction, retrofitting, and servicing of varying styles of equipment and technologies including data center/precision cooling, chiller/boiler plants, VRF/VRF technology, and building automation systems.  John is certified by a wide variety of manufacturers, including Daiken, Carrier, Mitsubishi and Trane.  Having worked in some of the most demanding environmental conditions for very high profile customers, John has achieved a high standard for quality and performance. John has been responsible for the onsite performance of tradesman while directly interfacing with large portfolio owners, government agencies, architects, engineers, educational institutions, and operational/in-use facility management personnel. John’s priorities are to constantly provide the highest quality of service and solutions, staying involved with and educated on cutting edge mechanical technologies, being a teammate and partner of Energesco Mechanical’s clients, customers, and employees.